blob: 6c7dde3d18cf1ac223f14fcef0cc29fd37ba771a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
<!DOCTYPE HTML>
<html>
<head>
<title>Test DelayNode with maxDelayTime delay - bug 890528</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test">
<script src="webaudio.js" type="text/javascript"></script>
<script class="testbody" type="text/javascript">
const signalLength = 2048;
const delayLength = 1000; // Not on a block boundary
const outputLength = 4096 // > signalLength + 2 * delayLength;
function applySignal(buffer, offset) {
for (var i = 0; i < signalLength; ++i) {
buffer.getChannelData(0)[offset + i] = Math.cos(Math.PI * i / signalLength);
}
}
var gTest = {
numberOfChannels: 1,
createGraph: function(context) {
var buffer = context.createBuffer(1, signalLength, context.sampleRate);
applySignal(buffer, 0);
var source = context.createBufferSource();
source.buffer = buffer;
const delayTime = delayLength / context.sampleRate;
var delay = context.createDelay(delayTime);
delay.delayTime.value = delayTime;
source.connect(delay);
source.start(0);
return delay;
},
createExpectedBuffers: function(context) {
var expectedBuffer = context.createBuffer(1, outputLength, context.sampleRate);
applySignal(expectedBuffer, delayLength);
return expectedBuffer;
},
};
runTest();
</script>
</pre>
</body>
</html>
|
